Table 1.

Demographic and Clinical Characteristics for SOC With and Without LM.

Characteristics		N
	Without LM (N = 9648, 96.23%)	With LM (N = 378, 3.77%)	χ2	p
Race			7.315	0.026
Black	684(95.40%)	33(4.60%)
Others	843(94.82%)	46(5.18%)
White	8121(96.45%)	299(3.55%)
Age			7.228	0.007
<median	4777(96.76%)	160(3.24%)
≥median	4871(95.72%)	218(4.28%)
Marital status			0.516	0.472
Married	5396(96.10%)	219(3.90%)
Unmarried	4252(96.40%)	159(3.60%)
Insurance			0.171	0.918
Insured	9248(96.22%)	363(3.88%)
Uninsured	335(96.54%)	12(3.46%)
Unknown	65(95.59%)	3(4.41%)
T stage			128.515	0.000
T0	3(60.00%)	2(40.00%)
T1	1862(99.63%)	7(0.37%)
T2	1268(97.92%)	27(2.18%
T3	6456(95.10%)	333(4.90%)
T4	59(86.76%)	9(13.24%)
N stage			49.536	0.000
N0	6607(97.02%)	203(2.98%)
N1	2671(95.02%)	140(4.98%)
NX	370(91.36%)	35(9.64%)
Laterality			18.756	0.000
Left	2221(97.28%)	62(2.72%)
Right	2331(96.92%)	74(3.08%)
Unspecial	5096(95.47%)	242(4.53%)
Grade			36.174	0.000
Well differentiated	778(99.11%)	7(0.89%)
Moderately differentiated	1285(97.94%)	27(2.06%)
Poorly differentiated	3964(95.82%)	173(4.18%)
Undifferentiated	3621(95.49%)	171(4.51%)
Bone Met			183.529	0.000
No	9608(96.43%)	356(3.57%)
Unknown	15(55.56%)	12(44.44%)
Yes	25(71.43%)	10(29.57%)
Brain Met			117.539	0.000
No	9621(96.35%)	364(3.65%)
Unknown	20(60.61%)	13(39.39%)
Yes	7(87.50%)	1(22.50%)
Liver Met			442.472	0.000
No	9241(96.70%)	286(3.30%)
Unknown	11(40.74%)	16(59.26%)
Yes	396(83.90%)	76(16.10%)
Chemotherapy			28.935	0.000
Yes	8894(96.51%)	321(3.49%)
No/Unknown	754(92.97%)	57(7.03%)
Radiation-therapy			0.475	0.491
Yes	833(95.75%)	37(4.25%)
No/Unknown	8815(96.28%)	341(3.72%)
Surgery			18.816	0.000
Yes	9490(96.35%)	360(3.65%)
No/Unknown	158(89.77%)	18(10.23%)